In the Name of Allah, The Most Gracious, Most Merciful

Question: If a pregnant woman feels too tired during fasting, can she breaks her fast, provided that fasting is not dangerous for her nor for the baby?
Answer: Pregnant and breastfeeding women can break their fast and only pay fidya (giving a poor person two satisfactory meals for everyday of fasting). That is the opinion of most scholars.

Praise be to Allah, the Lord of Creations